Results 61 to 70 of about 946 (192)

Input current interharmonics in adjustable speed drives caused by fixed-frequency modulation techniques [PDF]

, 2016
© 2016 IEEE. Adjustable Speed Drives (ASDs) based on double-stage conversion systems may inject interharmonics distortion into the grid, other than the well-known characteristic harmonic components.
H. Soltani (23448211), Firuz Zare (23447827), F. Blaabjerg (23350390), P. Loh (23348680), P. Davari (23307184)   +4 more
core   +2 more sources

Phasor Estimation of Transient Electrical Signals Using Modified Covariance Enhanced Cleaned Characteristic Harmonic Filtering in Protection Relay

Energies
Modern protection relays require accurate and fast phasor estimation under harsh transient conditions, including a decaying DC component, harmonics, interharmonics, noise, and frequency instability.
Natheer Alwan, Veljko Papic
doaj   +1 more source

New Power Balance Equations for Modelling Electric Arc Furnace

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
‐ Proposing two new power balance equations which consider both arc radius and length. ‐ Proposing four new EAF models. ‐ Time varying characteristics of the model are preserved as model parameters change every half cycle. ‐ Like the actual cases, the time variations are non‐stationary as different ARMA models are selected at every run of the models. ‐
Zahra Babaei, Haidar Samet, Vladimir Alexandrovich Serikov   +2 more
wiley   +1 more source

Fast-responding measurements of power system harmonics using discrete and fast fourier transforms with low spectral leakage [PDF]

, 2011
Conventional wisdom dictates that a Fast Fourier Transform (FFT) will be a more computationally effective method for measuring multiple harmonics than a Discrete Fourier Transform (DFT) approach.
Burt, Graeme M., Carter, R., Cruden, A., Roscoe, Andrew J.   +3 more
core  

Research on Vibration and Noise of Converter Transformer Based on LCL Converter

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
The paper outlines the topology of the new LCL converter. Through theoretical analysis and experimental verification, it has been confirmed that the proposed LCL converter not only effectively sup‐presses harmonics but also significantly reduces the vibration and noise of the converter transformers.
Liang Zhao, Longfu Luo, Yuzhuo Wang, Hao Zhang, Yan Feng, Yanyun Jin   +5 more
wiley   +1 more source

Operation of an induction motor supplied by voltage with interharmonics [PDF]

, 2018
W artykule omówiono skutki obecności interharmonicznych, tj. częstotliwości wyższych od częstotliwości podstawowej harmonicznej, niebędących jej całkowitą krotnością, w napięciu zasilającym silnik indukcyjny.
Drabek, T.
core   +1 more source

Monitoring and Confirmation Method for Submodule IGBT Open‐Circuit Faults in MMCs Under Different Modes

IET Power Electronics, Volume 18, Issue 1, January/December 2025.
This paper proposes an effective detection method for insulated gate bipolar transistor (IGBT) open‐circuit faults in multiple modular multilevel converters (MMCs) working in inverter and rectifier modes. This fault detection uses segmental structure and is composed of the fault monitoring and fault confirmation.
Zhengkui Zhao, Minxiao Han
wiley   +1 more source

Effect of Rectangular Voltage Fluctuations on Currents of Single-Phase Induction Motors

Scientific Journal of Gdynia Maritime University
Various power quality disturbances commonly occur in a power system, including voltage fluctuations. These can be analysed as simultaneous occurrences of voltage subharmonics and interharmonics of various frequencies – components of frequency less than ...
Marcin Pepliński, Piotr Gnaciński
doaj   +1 more source

Accurate Analysis of Harmonic Transmission of Line Commutated Converter Considering Firing Angle Fluctuation

IEEE Access, 2020
Line commutated converter (LCC) has been widely applied in hybrid high voltage direct current (HVDC) transmission system, where the modular multilevel converter (MMC) is applied as receiving end and may induce low order harmonics in DC-link voltage ...
He Huang, Junpeng Ma, Shunliang Wang, Yuqing Dong, Ning Jiao, Tianqi Liu   +5 more
doaj   +1 more source

Impedance‐Based Adaptive Droop Control for Islanded AC Microgrids and Overview

International Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.
Recent improvements in the application of distributed energy resources (DERs) and microgrids (MGs) have made controlling these resources very important. However, there are still many challenges in this field. One of the anticipated challenges in islanded MGs (IMGs) is the mismatched output impedance of DERs, which affects the volt‐var regulation ...
Forough Qashqaie, Hadi Saghafi, Ramtin Sadeghi, Bahador Fani, Michele De Santis   +4 more
wiley   +1 more source